LEFT RIGHT ARROW WITH STROKE·U+21AE

Character Information

Code Point
U+21AE
HEX
21AE
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 86 AE
11100010 10000110 10101110
UTF16 (big Endian)
21 AE
00100001 10101110
UTF16 (little Endian)
AE 21
10101110 00100001
UTF32 (big Endian)
00 00 21 AE
00000000 00000000 00100001 10101110
UTF32 (little Endian)
AE 21 00 00
10101110 00100001 00000000 00000000
HTML Entity
↮
URI Encoded
%E2%86%AE

Description

The Unicode character U+21AE, known as the "LEFT RIGHT ARROW WITH STROKE," is a symbol commonly used within digital text to represent a directional change or flow. It typically serves as an arrow that faces both left and right simultaneously, indicating bi-directionality or a reversible movement in texts or diagrams. This character is particularly useful in various linguistic contexts where the direction of reading may change, such as in languages like Hebrew or Arabic. In technical documentation, the LEFT RIGHT ARROW WITH STROKE is often employed to signify the concept of an exchange or a cyclical process in algorithms and computer programming. The stroke on this arrow distinguishes it from other bi-directional symbols, emphasizing that it can only change direction once, rather than being continuously reversible.

How to type the symbol on Windows

Hold Alt and type 8622 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+21AE. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format: 1110xxxx 10xxxxxx 10xxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+21AE to binary: 00100001 10101110. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    11100010 10000110 10101110